The ________ pass on the vibrations from the outer ear to the inner.

Options

A. ear canal
B. ear drum
C. tympanum
D. middle ear

Answer

To answer the question, "The ________ pass on the vibrations from the outer ear to the inner," we need to identify the structures in the ear that are responsible for transmitting sound vibrations.

### Step-by-Step Solution:

1. **Identify the Parts of the Ear**: The ear is divided into three main parts: the outer ear, middle ear, and inner ear.

2. **Understand the Function of Each Part**:
- The **outer ear** collects sound waves and directs them to the eardrum.
- The **middle ear** contains tiny bones that amplify and transmit the vibrations from the eardrum to the inner ear.
- The **inner ear** converts these vibrations into nerve signals that the brain interprets as sound.

3. **Focus on the Middle Ear**: The question specifically asks about the transmission of vibrations from the outer ear to the inner ear, which occurs in the middle ear.

4. **Identify the Tiny Bones**: The tiny bones in the middle ear that are responsible for this transmission are known as the **ossicles**. The three bones are called the malleus (hammer), incus (anvil), and stapes (stirrup).

5. **Fill in the Blank**: Based on the information gathered, we can fill in the blank. The correct answer is: "The **ossicles** pass on the vibrations from the outer ear to the inner."

### Final Answer:
The **ossicles** pass on the vibrations from the outer ear to the inner.

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